Home / 21,000.48-28,953.76-17,209.68

Finding the Fourth Proportional to 21,000.48, 28,953.76 and 17,209.68

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Solution

The fourth proportional to 21,000.48, 28,953.76 and 17,209.68 is: 23,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.48 : 28,953.76 = 17,209.68 : x
  2. Step 2: Convert to fraction form
    21,000.48/28,953.76 = 17,209.68/x
  3. Step 3: Cross multiply
    21,000.48x = 28,953.76 × 17,209.68
  4. Step 4: Simplify right side
    21,000.48x = 498,284,944.40
  5. Step 5: Solve for x
    x = 498,284,944.40/21,000.48
  6. Step 6: Final answer
    x = 23,727.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.